{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "cell line", "cell type", "protein", "RNA"], "input": "This was also true for KBF (p50 homodimer) binding activity in U937 cells ."}
{"DNA": [], "cell line": ["U937 cells", "U937"], "cell type": [], "protein": [], "RNA": []}